Sleeping bag



FIG. 1 is an upper perspective view of a sleeping bag, illustrating an exemplary person in an exemplary position while using the sleeping bag;

FIG. 2 is another upper perspective view of the sleeping bag;

FIG. 3 is top view of the sleeping bag;

FIG. 4 is a bottom view of the sleeping bag;

FIG. 5 is a left side view of the sleeping bag;

FIG. 6 is a right side view of the sleeping bag;

FIG. 7 is a front view of the sleeping bag; and,

FIG. 8 is a rear view of the sleeping bag.

The broken lines shown illustrate portions of the sleeping bag that form no part of the claimed design. 

CLAIM The ornamental design for a sleeping bag, as shown and described. 